| 柴达木盆地西部地区古、新近系油源成熟度 |
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| 引用本文： | 赵东升,张敏,张道伟,杨乾政,赵小花,刘桂花,郝小梅.柴达木盆地西部地区古、新近系油源成熟度[J].沉积学报,2007,25(2):319-324. |
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| 作者姓名： | 赵东升 张敏 张道伟 杨乾政 赵小花 刘桂花 郝小梅 |
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| 作者单位： | 西北大学地质系 西安 710069 |
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| 摘 要： | 烃源岩的成熟度决定了原油的成熟度与类型。利用R0、C29 20S/20S+20R与C29 ββ/ββ+αα确定了柴西地区烃源岩的成熟度；通过原油C29 20S/20S+20R、C29 ββ/ββ+αα与折算镜质体反射率Rc确定了原油的成熟度。研究表明，柴西地区古、新近系原油系低熟—成熟油为主，早期形成的低熟油运移至茫崖坳陷及周缘的深层构造，受后期构造运动影响部分低熟油运移到浅层构造，晚期形成的成熟油主要聚集于茫崖凹陷周缘深层，因此，原生低熟—成熟油藏的勘探应围绕茫崖凹陷及尕斯断陷深层构造及小梁山凹陷周缘浅层构造。
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| 关 键 词： | 烃源岩与原油 地球化学参数 成熟度 勘探方向 柴达木盆地 |
| 文章编号： | 1000-0550（2007）02-0319-06 |
| 收稿时间： | 2006-04-15 |
| 修稿时间： | 2006-04-152006-11-28 |
Maturity of Tertiary Oil-source in West Qaidam Basin |
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| ZHAO Dong-sheng,ZHANG Min,ZHANG Dao-wei,YANG Qian-zheng,ZHAO Xiao-hua,LIU Gui-hua,HAO Xiao-mei.Maturity of Tertiary Oil-source in West Qaidam Basin[J].Acta Sedimentologica Sinica,2007,25(2):319-324. |
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| Authors: | ZHAO Dong-sheng ZHANG Min ZHANG Dao-wei YANG Qian-zheng ZHAO Xiao-hua LIU Gui-hua HAO Xiao-mei |
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| Institution: | Geology Department of Northwestern University,Xi′an 710069;2 Company of Qinghai Oilfield,CNPC, Dunhuang, Gansu 736202 |
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| Abstract: | Maturity and types of crude oil depend on maturity of source rock. It is adopted R0, C29 20S/20S+20R and C29 ββ/ββ+αα define the maturity of source rock, and C29 20S/20S+20R, C29 ββ/ββ+αα as well as vitrinite reflectance of crude oil reduction (RC) to define maturity of crude oil in west Qaidam basin. In the light of studies there are two types of crude oil for low maturity and maturity in west Qaidam basin, original low maturity crude oil migrate to deep structural trap of Mangya depression and its margin, part of low maturity crude oil remove to shallow structural trap because of affection of late movement, late maturity crude oil accumulates in the deep structural trap. Therefore, exploration of primary reservoir of low maturity and maturity crude oil, in the west Qaidam basin, should surround deep structural trap of Mangya and Gasi sag, and shallow structural trap of Xiaolianshan sag and its margin. |
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| Keywords: | oil-source geochemical parameters maturity exploration strategy Qaidam basin |
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